u/Deluxe_rK

Hey guys, my 2022 M240ix has developed a violent mechanical bang/shake during warm starts (after sitting for ~30 mins).

BMW says they can't find anything wrong and we have already confirmed the engine mounts are fine, so it is not a mounting issue.

Check out the video attached - you can hear the thud right at the start. It feels like a hammer hitting the chassis.

Has anyone experienced this? Is it a known B58 quirk or should I be worried about injectors/starter/flywheel?

Thanks!